Answer to Question #167259 in General Chemistry for hayley samantha farah

Question

A container has 800.0 mL of an aqueous solution containing OH^– ions. How many grams of OH^– ions are in the solution if the molarity is 0.557 M?

Answer 1

Volume= 800ml= 0.80L

Mass of OH^-= ?

Molarity= 0.577M

Molar Mass= 17g/mol

Molarity = moles/litres

Moles= molarity x Litres = 0.577 x 0.8 = 0.4456mol

Mass= mole x molar mass

= 0.4456 x 17 = 7.58g